Home / 208,415,771.28-312,229,056.28-139,119,626.32

Finding the Fourth Proportional to 208,415,771.28, 312,229,056.28 and 139,119,626.32

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Solution

The fourth proportional to 208,415,771.28, 312,229,056.28 and 139,119,626.32 is: 208,416,039.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,415,771.28 : 312,229,056.28 = 139,119,626.32 : x
  2. Step 2: Convert to fraction form
    208,415,771.28/312,229,056.28 = 139,119,626.32/x
  3. Step 3: Cross multiply
    208,415,771.28x = 312,229,056.28 × 139,119,626.32
  4. Step 4: Simplify right side
    208,415,771.28x = 43,437,189,635,919,840
  5. Step 5: Solve for x
    x = 43,437,189,635,919,840/208,415,771.28
  6. Step 6: Final answer
    x = 208,416,039.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.